He was created a baronet in 1644 for his support, but the letters patent were lost or never finalised and the dignity was not confirmed until 1677/8, long after his death.
The title was allowed to drop by his successors until the accession of his fourth son Sir Hugh Acland, 5th Baronet.
General Fairfax made Columb John his headquarters while besieging Exeter in 1645/6, which city surrendered on terms on 9 April 1646.
Acland was included in the surrender, and Fairfax recommended that the House of Commons offer him a moderate composition for his estate.
However, he suffered from the attentions of Richard Evans, a brewer of Exeter, who obtained a re-sequestration of the estate for damages due to him.