Complex sentence: It is likely that it was the huge dowry from Courten that made possible the purchase of a baronetcy for the younger Edward Littleton, which was conferred by Charles I on 28 June 1627.
Split into simpler sentences: It is likely that this huge dowry made possible the purchase of a baronetcy for the younger Edward Littleton in 1627. Littleton was created a Baronet by Charles I on 28 June 1627.