Start Date/What is your oldest pokemon still in your bag?

My starter Squirtle.

start 27/12/2016
oldest 31/12/2016 a pikachu and a raichu from the day after, both with a christmas hat :D

Start is July 6, 2016
Oldest Pokemon is a vaporeon from July 10, 2016. I used him for prestiging back when it was a thing.

This 100% IV Murkrow.
Start date: 28.04.2017.

Start 13-7
Scyther 15-7 93%

Started 8/14/2017

Start; 07-17-2016
Rhyhorn 100% 02-08-2016

Funny that I caught/hatched 3 100% pokémon in 5 days back then. I thought they were fairly common at the time.

Start date: July 10
Oldest: 374 cp Butterfree from July 12
I'm pretty sure it's the best Butterfree I've ever gotten (only 2).

Slowbro - gym defender. 7/31/16
Same day - still have hatched Porygon, Eggy, Vaperon
Started - 7/14/16

Start Date July 13
Pidgeot July 14

Start date: 7/21/16

Oldest: 9/4/16 scyther 96%

My starter Bulbasaur 7/9/16.

Started Oct. 30
Caught this gal on Nov. 2

I was so proud to have a gengar that I didn't realize that level 1 (at the time) was really not good. So this clueless noob invested a lot of dust and candy .... and finally gave up at level 9 :)

Start 7/22, oldest a Venusaur 8/18, 1436CP it is still at level 20, Razor Leaf/Petal Blizzard. Finally threw away my first Snorlax last week, hatched it, hadn't hatched one since (caught 9)

How can you search "oldest", unless you've kept a record?
Start July 12.
Looking thru, think it's hitmonchan Aug 6

Start 7/8/16
This Arcanine 7/15/16