This pattern is featured in the book Knit a Little by Marie Greene.

Shopping for yarn when you’re tired is a lot like grocery shopping when you’re hungry, though I’ve never regretted any of the yarn that joined my family under these conditions. One such unplanned yarn purchase grew up to become a proper gansey, complete with a sea of delicious, twisty cables and fancy underarm gussets. This smaller version of the original is pared down for simplicity making it perfect for little ones. There’s just enough detail to keep it interesting, without slowing you down.

Don’t let the rich cables fool you – they’re easier than they look.

See the grown-up version here: https://www.oliveknits.com/product/januarygansey/

Yarn
Worsted weight | Malabrigo Rios | 100% superwash merino | 210 yards/ 192 meters in 100 g | 330 (341, 484, 550, 748, 770) yards/ 302 (312, 442, 503, 684, 704) meters

Sizes
1 (2, 3, 4, 5, 6)
6-12 mo (1- 2 yrs, 2 -4 yrs, 4-6 yrs, 6- 8 yrs, 8-10 yrs)

Finished Measurements
Chest circumference: 21 (24, 25, 28, 29, 32) in/ 52.5 (60, 62.5, 70, 72.5, 80) cm
Length of lower body from underarm: 6.5 (7.25, 8.25, 10.25, 13.25, 15.25) in/16.25 (17.5, 21.25, 25, 30, 35) cm
Sleeve length: 7 (8, 9.5, 12, 13, 14) in/17.5 (20, 23.75, 30, 32.5, 35) cm
Sleeve circumference: 8 (8.4, 9.2, 9.6, 10, 11.2) in/20 (21, 23, 24, 25, 28) cm

Needles
US Size 6/4mm (16-24 in/40-60 cm) circular needle – body
US Size 6/4mm (12 in/30 cm circular needles or DPNs) – sleeves
US Size 5/3.75 mm (16-24 in/40-60 cm) – lower ribbing
US Size 4/3.5mm (12-16 in/30-40 cm) circular needle – neckline
US Size 5/3.75mm (DPNs) – sleeve cuffs

Use needle size necessary to obtain gauge. Adjust other needle sizes accordingly.

Gauge
20 st and 24 rows in 4 in/10 cm in stockinette stitch with largest needle, blocked
22 st and 26 rows in 4 in/10 cm in cable pattern with largest needle, blocked

Notions
Cable needle
Stitch markers
Darning needle to weave ends