Which preposition to use with lamplighters

on Occurrences 2%

The barber was turning out the gas in his little saloon; the greengrocer was emerging with a cigarette in his mouth and an aster in his button-hole, and a group of children were escorting the lamplighter on his rounds.

of Occurrences 1%

After writing this a few times I gave it up, cut off the "Dear Veronicas," and made lamplighters of the paper.

Which preposition to use with  lamplighters