To wait upon; minister to; be present at; follow; accompany.
To give attention; listen; give attendance; with to.
To be present; with at, on, or upon.
To follow, as a result; with on or upon.
You stay here, Mary, till I can attend to him myself. – The Case and The Girl by Randall Parrish
Well, I got my papers to attend to now, but see that you have those things ready by the time I get back. – The Rosie World by Parker Fillmore