[1] During the period of transition to Indonesian independence and the 1949 Dutch–Indonesian Round Table Conference he was a leader of the largest faction advocating for the rights of Indos.
[4][1][5] His father, Michiel Frederik Blaauw was born in Bemmel, Netherlands; his mother was named Jeanna Louise Smit.
[11] He resigned from the Indo Europeesch Verbond in 1947, citing irreconcilable differences between his views and those of the current leadership of the party.
[18] Around 1960 he was active in another organization, NASSI (Nationale Actie Steunt Spijtoptanten Indonesië), which was chaired by William Lemaire, a fellow Indo lawyer who had been a Catholic National Party member of parliament in the Netherlands and had since become a professor at Leiden University.
[19][20] The purpose of that organization was to support Dutch and Indo people still living in Indonesia, and to expedite their relocation to the Netherlands if necessary.