Can't see any obvious marriage either, but I think your
Arthur Davren may be the son of
Arthur Davren/Devlan/Devlin/Develin, who married
Agnes Shilland in 1846 in Glasgow.
Here they are in 1851 in Barony (spellings as per FreeCen transcription):
- Arthur Develin, head, 27, weaver, Kilbarchan, Renfrew
- Agnes Davelin, wife, 23, Glasgow, Lanarkshire
- Margaret Davelin, daughter, 10m, Glasgow, Lanarkshire
And in 1861, Glasgow Bridgeton (spellings as per Ancestry transcription):
- Arthur Doulin, head 32, carpet weaver, Kilbarchan, Renfrew
- Agnes Doulin, wife 32, Glasgow, Lanarkshire
- Margaret, Doulin, daughter, 10, Glasgow, Lanarkshire
- Alexander Doulin, son, 8, Glasgow, Lanarkshire
- Arthur Doulin, son, 6, Glasgow, Lanarkshire- Agnes Doulin, daughter, 5, Glasgow, Lanarkshire
- Elizabeth Doulin, daughter, 1, Glasgow, Lanarkshire
There is a birth for an Elizabeth
Devlin, to Arthur Devlin and Agnes Shilland in 1859, Glasgow Calton; and an Agnes
Devlin to the same couple, Glasgow Bridgeton in 1857.
And in 1871, Glasgow Calton (spellings as per Ancestry transcription):
- Arthur Davren, 42, glove dyer (master), Kilbarchan, Renfrew
- Agnes Davren, 42, glove dyer’s wife, Glasgow, Lanarkshire
- Margaret Davren, 20, tailoress, Glasgow, Lanarkshire
- Arthur Davren, 16, glove dyer and cleaner, Glasgow, Lanarkshire- Agnes Davren, 16, tailoress, Glasgow, Lanarkshire
- Elizabeth Davren, 12, Glasgow Lanarkshire
- William Davren, 10, Glasgow, Lanarkshire
- John Davren, 7, Perth, Perthshire
There’s a birth for a John
Devlin, to Arthur Devlin and Agnes Shilland in 1864 in Perth; and a William Douglas
Devlin in 1861 in Glasgow Bridgeton.
Can't obviously see any of the family in 1881, but with such variation in spelling, it's a bit of a thankless task

Ruth