Complex sentence: He was ultimately compelled to accept the sees of Killala and Achonry in Connacht, which were of little worth: in 1610, he complained he had not received their possession, and the full grant was not made until 1611.
Split into simpler sentences: He was ultimately compelled to accept the sees of Killala and Achonry in Connacht, which were of little worth. In 1610 he complained he had not received their possession, though the full grant was not made until 1611.