Wasn't Pluto discovered based on Percival Lowell's calculations that there need to be a Planet X to account for gravitational anomalies in Neptune's orbit? Do

Wasn't Pluto discovered based on Percival Lowell's calculations that there need to be a Planet X to account for gravitational anomalies in Neptune's orbit? Do your own fact checking, but iirc Pluto was a lucky find - it was way too small to be the theoretical 'Planet X', but just happened to be in the right area when Clyde Tombaugh was looking there based on Lowell's calculations? I guess my point is: this isn't a new theory, but it certainly has a lot more data than Lowell had in the '20s. And it would be fascinating if a ninth planet were discovered, based on the same process that led us (flukily) to Pluto.