The bulk update request #3679 is pending approval.

create alias mathew_(srmmk_mce) (176) -> macchie (2)
create alias srmmk_mce (0) -> macchie (2)
create alias まっちー (0) -> macchie (2)
create alias まちち (0) -> macchie (2)
create alias まちち本舗 (0) -> macchie (2)

Reason: Alternative names, see https://e621.net/artists/42559

The preferred romanization seems to be macchie, as this is used on the artist's pixivFANBOX: https://macchie.fanbox.cc