Pollyanna is a mexican sativa strain from way back in the day. Neville took it and crossed it with a pakistani sativa thus creating the strain ''Pollypak''
This is the description from him. It was either sold at The Seed Bank or Super Sativa Seed Club(SSSC)...I'm pretty sure it was sold under The Seed Bank -
'This is an early F1 hybrid, bred especially for those growers who appreciate the sweet aromas and up high of a quality Sativa. It is a cross between Pollyanna, a Mexican-derived strain, and the best Pakistani Sativa that I could find. A very resinous, consistently sweet performer, recommended for outdoor growing'.