His sister Gertruid Overlander (1577–1653) married Geertruids brother Pieter Jansz Hooft.

He lived in the cityhouse De Dolphijn in the Amsterdam Singel, which he bought in 1609 from the important writer and thinker Hendrick Laurensz Spiegel for 14,000 guilders.

[2] In 1618 Volkert bought the Free and High Fief Ilpendam and Purmerland from the Creditor from the Count of Egmond and in 1622 he built the castle of Ilpenstein.

[2] In 1620 Overlander was raised to the hereditary knighthood by the English King James I through the mediation of his brother-in-law Pieter Jansz Hooft.

[2] In 1628 Overlander became an advisor of the States of Holland and West Friesland in The Hague, a position which he held until his death.