[citation needed] Despite these gestures, Henry I the Bearded refused to militarily support Władysław Odonic, as he tried to reconcile both princes through diplomatic channels.

In 1208 a meeting was arranged in Głogów, where the Duke of Wrocław and the Bishops of Lubusz and Poznań discovered that resolution of this situation was to be a difficult task.

The meeting ended with a partial success, because Władysław III Spindleshanks reached an agreement with the Archbishop Kietlicz, who could return to Gniezno, with the promise of restitution of all his goods, in exchange for lifting the anathema.

Mieszko I Tanglefoot was not present in Borzykowa; with the support of the Gryfici family, he decided to lead his army and march against Kraków, where confusion among the citizens left him in total control of the capital without fighting, and he became the new High Duke.

[citation needed] In 1215 Władysław Odonic took part in the congress of princes and bishops in Wolbórz, where he and the other Piast rulers (including Leszek I the White, Konrad I of Masovia, and Casimir I of Opole) agreed to extend the economic and legal benefits for the Church.

[citation needed] One year later, Archbishop Kietlicz supported the provisions of the IV Lateran Council, wherein papal authority was reinforced and the Fifth Crusade was organized.

[citation needed] The agreement at Danków (which Henry I the Bearded soon joined) and the death of Archbishop Kietlicz enabled Władysław III Spindleshanks to attack his nephew with the benevolent neutrality of the other Piast rulers.

[citation needed] In 1218 Władysław Odonic finally arrived to the court of Świętopełk II of Pomerania (probably his brother-in-law),[2] who wanted his own political emancipation and broke his homage to Leszek the White.

[citation needed] Afraid that he could lose all of his domains, Władysław III Spindleshanks decided to find a peaceful solution to the dispute with his nephew.

For unknown reasons, Władysław III Spindleshanks ultimately chose not to appear at the congress, perhaps because his interests were probably represented by Paul, Bishop of Poznań.

In addition, the dukes were also to discuss proposals for a solution to the usurpation of the ducal title by Świętopełk II of Pomerania, who used the confusion in Greater Poland to seize Nakło, which belonged to Władysław).

[citation needed] The tragic end of the meeting took place on the morning of 24 November, when during a break from the deliberations the princes were attacked by Pomeranians, who killed Leszek the White and seriously injured Henry I the Bearded.

[citation needed] The events of Gąsawa led to a very complicated situation in Poland, and brought few benefits to Władysław Odonic in his conflict with his uncle.

At the beginning of 1228, Władysław III Spindleshanks, with the help of Silesian forces, managed to defeat his nephew under unknown circumstances, taking him prisoner.

[citation needed] On 3 November 1231 Władysław III Spindleshanks died unexpectedly, apparently killed by a German girl whom he tried to rape.

[citation needed] However, this policy of submission to the church brought a negative effect among the nobility, who in 1233 rebelled against him and offered the Duchy of Greater Poland to Henry I the Bearded.

[citation needed] In 1234 their recently concluded peace was suddenly broken, and hostilities between Henry I the Bearded and Władysław Odonic were renewed.

The terms of the agreement, published on 22 September 1234, were very unfavorable for Władysław Odonic, who had to relinquish all the territories south and west of the Warta River, which included Kalisz, Santok, Międzyrzecz, and Śrem.

[citation needed] The war broke again by the end of 1235, when Władysław Odonic (using the unrest caused by the brutal government in Śrem of the Governor appointed by Henry I the Bearded, Prince Borzivoj of Bohemia), deceitfully tried to recover that part of Greater Poland.

[citation needed] Władysław Odonic, having good relations with the Church, began efforts with Pope Gregory IX for the annulment of the 1234 treaty and Henry I's decision to remove him from Greater Poland by force.